Jakob Goldbach wrote: >>> 1. If we are going to have several Lustre file systems, is there any >>> reason not to create each one with its own combined MGS/MDT? >>> >> Not that I'm aware of, with the restriction that you can only have a >> single MGS running on a node at a time. If you have failover MDSes, >> then they need to share an MGS. >> >> > > May a client mount different lustre-filsystems from different MGS's ? > > The manual (sec 2.1.1) says "There should be one MGS per site, not one MGS > per file system." > > I thought this meant a single MGS if a client want's to mount several > lustre-filesystems. > It's not a requirement. The idea behind a single MGS per site is that way, you can mount multiple different Lustre FS's without having to keep track of which servers they are on -- all you need to remember is the one mgsnid in "mount -t lustre mgsnid:/any_fs" The idea is one centralized place for config data / starting clients / monitoring (eventually).
There will be one MGC on the client for each different MGS, so there's slightly more resource usage if you do multiple MGS's, but no big deal. _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
